Scholarlink

<p>The glass transition, crystallization, and melting behaviors of various crystallizable polyester polyols were investigated through differential scanning calorimetry. Samples with different crystallinity were prepared by manipulating the cooling rate, isothermal crystallization, and blending <i>semi</i>-crystalline with amorphous polymers. The melting enthalpy for fully crystalline polyester polyols (<i>ΔH</i><sub>f</sub> (100%)) and the heat capacity change at glass transition for fully amorphous polyester polyols (<i>ΔC</i><sub>p</sub> (100%)) of different polyester polyols were determined using extrapolation methods. Based on the melting enthalpy (<i>ΔH</i><sub>m</sub>) of different polyester polyols, the crystallinity of different polyester polyols after storage at room temperature for 3&#xa0;months were calculated.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Determination of crystallinity of polyester polyols by differential scanning calorimetry

  • 期刊论文

  • 发表日期：

    2025年10月16日

查看全文
  • Yingying Zheng,
  • Liqun Xiao,
  • Jing Zhou,
  • Jingsong Tang

摘要

The glass transition, crystallization, and melting behaviors of various crystallizable polyester polyols were investigated through differential scanning calorimetry. Samples with different crystallinity were prepared by manipulating the cooling rate, isothermal crystallization, and blending semi-crystalline with amorphous polymers. The melting enthalpy for fully crystalline polyester polyols (ΔHf (100%)) and the heat capacity change at glass transition for fully amorphous polyester polyols (ΔCp (100%)) of different polyester polyols were determined using extrapolation methods. Based on the melting enthalpy (ΔHm) of different polyester polyols, the crystallinity of different polyester polyols after storage at room temperature for 3 months were calculated.